Wimbledon’s U18s set up the fifth-round clash with the west London giants following a shock 2-1 away win at Newcastle United in round four.
Reigning champions Chelsea’s route to this stage has seen them demolish Huddersfield 6-1 and then Manchester United 5-1 to reach this point.
The Dons’ senior side will be watching on at Kingsmeadow tomorrow and hoping their younger club-mates can produce another upset.
Robinson says the squad were a little overawed by the task that they were set when their opponents were revealed but have since buckled down on the training pitch.
In pictures: Newcastle United U18s 1-2 AFC Wimbledon
“It’s been a little bit different because our league finished a few weeks ago until February 13,” Robinson told Dons Player ahead of the fixture.
“We haven’t had any games so it was about getting the balance right in what we do. We’ve had more time to prepare.
“Ahead of the Watford and Newcastle games, I didn’t feel any anxiety among the boys. After the Chelsea vs Manchester United game there was certainly in a shift in some of the boys’ attitude.
“It’s not been a bad attitude but there was certainly an anxiety among the group.
“I planned a meeting five days before the game to deal with the reality of the situation. To cause an upset of this magnitude you need to bring more than just getting their faces.
“That meeting was brought forward and the players were open. Since then, the training has gone up a notch. We’re going to be playing one of the best U18s side in Europe so it’ll be a good test.
“The FA Youth Cup has given us a focus. The boys have raised their game and in some respects it is far more than I thought they would.
“We raised our performance against Watford and Newcastle and we’ve now got to take our performance to a level we haven’t been at before.”
Meanwhile, while Chelsea will be the away side on Tuesday night, the Blues may soon be calling Kingsmeadow their home.
The two clubs are poised to confirm the sale of the ground later this month as Chelsea intend to use the Kingston stadium for their youth and ladies sides.